<!DOCTYPE HTML>
<html>
<head>
  <title>Test AudioBufferSourceNode looping</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="webaudio.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test">
<script class="testbody" type="text/javascript">

var gTest = {
  length: 2048 * 4,
  numberOfChannels: 1,
  createGraph: function(context) {
    var buffer = context.createBuffer(1, 2048, context.sampleRate);
    for (var i = 0; i < 2048; ++i) {
      buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
    }

    var source = context.createBufferSource();
    source.buffer = buffer;
    source.start(0);
    source.loop = true;
    source.loopStart = buffer.duration * 0.25;
    source.loopEnd = buffer.duration * 0.75;
    return source;
  },
  createExpectedBuffers: function(context) {
    var expectedBuffer = context.createBuffer(1, 2048 * 4, context.sampleRate);
    for (var i = 0; i < 1536; ++i) {
      expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
    }
    for (var i = 0; i < 6; ++i) {
      for (var j = 512; j < 1536; ++j) {
        expectedBuffer.getChannelData(0)[1536 + i * 1024 + j - 512] = Math.sin(440 * 2 * Math.PI * j / context.sampleRate);
      }
    }
    for (var j = 7680; j < 2048 * 4; ++j) {
      expectedBuffer.getChannelData(0)[j] = Math.sin(440 * 2 * Math.PI * (j - 7168) / context.sampleRate);
    }
    return expectedBuffer;
  },
};

runTest();

</script>
</pre>
</body>
</html>
